Loading‐rate dependence of mode I crack growth in concrete

Ma, Minhua; Wu, Zhenlin; Hu, Xiaozhi; Yu, Rena C.; Fei, Xiaodong

doi:10.1111/ffe.13174

Cited by 13 publications

(4 citation statements)

References 20 publications

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“…For prefabricated cracked members, the determination of P ini can be accomplished through the test curve method and strain gauge method [ 21 , 35 , 36 ]. The test curve method takes the turning point from linear to non-linear in the rising section of P–CMOD curve as

; however, the turning point is difficult to determine precisely.…”

Section: Resultsmentioning

confidence: 99%

“…The larger the tension displacement of COD, the higher the consumed energy and peak load. Additionally, the results of pertinent research by Ma [ 21 ] and Zhu [ 23 ] have indicated that the fracture length and opening displacement increase with loading rate. BFAPC with 0.6% content had a smaller CTOD value but a longer crack propagation length at a strain rate of 10 −6 s −1 .…”

Section: Resultsmentioning

confidence: 99%

“…They found that the fracture toughness and fracture energy of concrete at low loading rates have a significant rate effect. Ma et al [ 21 ] concluded that the fracture toughness of concrete is linearly related to the logarithm of the strain rate, and the length of fracture process zone (FPZ) increases with an increase in loading rate. The above studies have shown that the loading rate has a significant effect on the fracture parameters of concrete, but the fracture performance of BFAPC at different strain rates has been less studied.…”

Section: Introductionmentioning

confidence: 99%

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Fracture Behavior of Basalt Fiber-Reinforced Airport Pavement Concrete at Different Strain Rates

Xia

Yan

et al. 2022

Materials

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As a commonly used surface structure for airport runways, concrete slabs are subjected to various complex and random loads for a long time, and it is necessary to investigate their fracture performance at different strain rates. In this study, three-point bending fracture tests were conducted using ordinary performance concrete (OPC) and basalt fiber-reinforced airport pavement concrete (BFAPC) with fiber volume contents of 0.2, 0.4, and 0.6%, at five strain rates (10−6 s−1, 10−5 s−1, 10−4 s−1, 10−3 s−1, and 10−2 s−1). Considering parameters such as the peak load, initial cracking load, double K fracture toughness, fracture energy, and critical crack expansion rate, the effects of the fiber volume content and strain rate on the fracture performance of concrete were systematically studied. The results indicate that these fracture parameters of OPC and BFAPC have an obvious strain rate dependence; in particular, the strain rate has a positive linear relationship with peak load and fracture energy, and a positive exponential relationship with the critical crack growth rate. Compared with OPC, the addition of basalt fiber (BF) can improve the fracture performance of airport pavement concrete, to a certain extent, where 0.4% and 0.6% fiber content were the most effective in enhancing the fracture properties of concrete under strain rates of 10−6–10−5 s−1 and 10−4–10−2 s−1, respectively. From the point of view of the critical crack growth rate, it is shown that the addition of BF can inhibit the crack growth of concrete. In this study, the fracture properties of BFAPC were evaluated at different strain rates, providing an important basis for the application of BFAPC in airport pavement.

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; however, the turning point is difficult to determine precisely.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fracture Behavior of Basalt Fiber-Reinforced Airport Pavement Concrete at Different Strain Rates

Xia

Yan

et al. 2022

Materials

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“…However, the desired results were not obtained because crack growth might be unstable and asymmetric. The fracture properties of concrete of different sizes at different loading rates were studied by these authors (Bu et al, 2020;Ma et al, 2020;Zhang et al, 2008). These studies found that the peak load was proportional to the loading rate, and the loading rate had a great influence on large specimens.…”

Section: Introductionmentioning

confidence: 99%

Study of the progressive failure of concrete by phase field modeling and experiments

Wang

Gao

Zhang

2021

International Journal of Damage Mechanics

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In this research, experiments and numerical simulations are employed to research the failure process of concrete. Fracture experiments on three-point bending (TPB) concrete beams with a prefabricated edge notch at the middle of the beam bottom are performed using a modified rigid testing instrument. The characteristics of the crack and section are analyzed, including the crack tensile opening displacement, crack length and width, and crack faces characteristics. Also, the full curves of the force-crack tensile opening displacement (CMOD) and force-deflection of the TPB beams with the prefabricated edge notch after breakage are obtained. The phase field (PF) damage model is applied to the mixed-mode and mode-I failure processes of concrete structures through the ABAQUS subroutine user defined element (UEL). The crack path and the full curves of force-CMOD and force-deflection obtained by numerical calculations are consistent with the experimental results and the calculated results of other researchers. The influences of the mesh sizes, initial lengths, and notched depths on the TPB beam of concrete are also analyzed.

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Flexural behaviors of concrete beams under monotonic and cyclic loadings

Chen

et al. 2023

Construction and Building Materials

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Loading‐rate dependence of mode I crack growth in concrete

Cited by 13 publications

References 20 publications

Fracture Behavior of Basalt Fiber-Reinforced Airport Pavement Concrete at Different Strain Rates

Fracture Behavior of Basalt Fiber-Reinforced Airport Pavement Concrete at Different Strain Rates

Study of the progressive failure of concrete by phase field modeling and experiments

Flexural behaviors of concrete beams under monotonic and cyclic loadings

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